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Recently I was asked about the process of converting images to black & white; namely when to know the image would be good for it. So in this post I’m going to talk about when to convert an image to black & white and then how to do it in Photoshop without losing quality.
There are three ideas that come to my mind when I evaluate whether I should convert an image to black & white.
Now lets talk about how to convert your image – there is a right and wrong way.
You may get the same result, but if you do it wrong you actually loose quality (to be technical, you sacrifice bytes of information).
For this article I’m going to be talking about using Adobe Photoshop. There is conversion software that you can buy, but for all intensive purposes, why pay extra when you can do it in Photoshop really easily.
If you have found an image that you want to convert, then step one is opening the image in Photoshop. For my example, I’m using one of my wedding photographs that you may have seen on my website. It was shot during the first dance.
Don’t do this!
Long story short, you’re actually changing the color profile, which means you will lose pixel information in your colors. You don’t want that; you want to retain as much information in your image as possible.
What you do want to do is use the black & white adjustments.
You can access this either by going to the top menu to Image>Adjustments>Black&White or in your side bar click on the adjustments button (as shown in picture) and then click on the b&w icon, which is the black and white box divided diagonally.
Once you’ve clicked this, you should see adjustments for the value of each color (see image). Notice that Photoshop has kept track of colors in the image. It’s just displaying them as b&w, but your keeping the information in tact.
This also gives you more control on editing your b&w cause you can adjust it by color section now.
Be aware, that you don’t want to push the limits on these colors too much, you’ll start to see ‘clipping’ in gradient colors such as skies. You’ll see it in your preview as you do it, then you’ll know what I’m talking about.
After this, you can use these other adjustments (which act as smart layers, if you know what that means) to adjust the image how ever you need; exposure, contrast, levels, curves, filters, etc.
After you’ve done all the editing you feel you need to do you should hopefully have an image you’re pleased with as a final. From you there you can save it.
David Wahlman is a wedding and portrait photographer from Redding, CA. He works all around California and is aiming to get into destination photography. You can see his best work at www.wahlmanphotography.com and follow his updates on his facebook page.